Originally Posted by MichaelW

When you change pads you have to bed them in using heat. I'm sure there is a thread on doing that but:
Clean and scrub your discs to remove any oil, grease and muck.
Dont touch the pad or disc surface.
Find a slope, get up speed and apply brake hard but dont skid. Repeat several times in rapid succession to build up heat.
Some people then cool down the brake and disc with a splash of water. It is VERY hot.
Do the other brake.